Table 2.
Radiological findings according to neck motion
| Variable | Flexion | Neutral | Extension | p-value |
|---|---|---|---|---|
| Sagittal CSA at compression | ||||
| SC (mm2) | 560.70 ± 90.53 | 534.04 ± 86.96 | 516.95 ± 106.20 | < 0.001* |
| CSF area (mm2) | 349.43 ± 123.80 | 353.50 ± 106.61 | 294.53 ± 101.02 | < 0.001* |
| CSF reserve ratio (%) | 37.63 ± 9.63 | 39.34 ± 8.71 | 35.89 ± 9.06 | 0.004* |
| Axial CSA at compression | ||||
| SC (mm2) | 68.95 ± 15.18 | 67.60 ± 15.44 | 68.03 ± 15.92 | 0.637 |
| CSF area (mm2) | 79.77 ± 33.89 | 77.33 ± 30.78 | 76.51 ± 35.26 | 0.594 |
| CSF reserve ratio (%) | 51.55 ± 13.08 | 51.60 ± 13.37 | 50.50 ± 14.31 | 0.759 |
| Sagittal diameter at compression | ||||
| SC (mm) | 5.04 ± 1.29 | 4.70 ± 1.26 | 4.59 ± 1.55 | 0.006* |
| Dural sac (mm) | 6.45 ± 0.72 | 6.33 ± 0.69 | 6.61 ± 0.82 | 0.002* |
| Cord occupation rate (%) | 78.02 ± 17.31 | 74.36 ± 18.07 | 69.07 ± 20.62 | < 0.001* |
| Axial diameter at compression | ||||
| SC (mm) | 5.97 ± 1.02 | 5.67 ± 1.05 | 5.48 ± 1.49 | 0.015* |
| Dural sac (mm) | 10.31 ± 1.96 | 10.19 ± 1.97 | 10.04 ± 2.25 | 0.472 |
| Cord occupation rate (%) | 59.49 ± 12.43 | 55.60 ± 9.61 | 56.64 ± 16.39 | 0.096 |
Values are presented as mean±standard deviation.
CSA, cross-sectional area; SC, spinal cord; CSF, cerebrospinal fluid.
*
p<0.05, statistically significant differences.